compositor: check if seteuid worked

Checking the return value from seteuid in
order to not launch clients with the wrong effective uid.

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>

diff --git a/src/compositor.c b/src/compositor.c
index f619f82..a2c8725 100644 (file)
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -247,8 +247,11 @@ child_client_exec(int sockfd, const char *path)
        sigfillset(&allsigs);
        sigprocmask(SIG_UNBLOCK, &allsigs, NULL);
 
-       /* Launch clients as the user. */
-       seteuid(getuid());
+       /* Launch clients as the user. Do not lauch clients with wrong euid.*/
+       if (seteuid(getuid()) == -1) {
+               weston_log("compositor: failed seteuid\n");
+               return;
+       }
 
        /* SOCK_CLOEXEC closes both ends, so we dup the fd to get a
         * non-CLOEXEC fd to pass through exec. */